原 Go語言實現人民幣小寫轉大寫

這是一個建立於 的文章，其中的資訊可能已經有所發展或是發生改變。

使用golang的Regex實現人民幣小寫轉大寫，代碼如下：

package mainimport ("regexp""strconv""log""fmt")func ConvertNumToCny(num float64) string {strnum := strconv.FormatFloat(num*100, 'f', 0, 64)sliceUnit := []string{"仟", "佰", "拾", "億", "仟", "佰", "拾", "萬", "仟", "佰", "拾", "元", "角", "分"}// log.Println(sliceUnit[:len(sliceUnit)-2])s := sliceUnit[len(sliceUnit)-len(strnum) : len(sliceUnit)]upperDigitUnit := map[string]string{"0": "零", "1": "壹", "2": "貳", "3": "三", "4": "肆", "5": "伍", "6": "陸", "7": "柒", "8": "捌", "9": "玖"}str := ""for k, v := range strnum[:] {str = str + upperDigitUnit[string(v)] + s[k]}reg, err := regexp.Compile(`零角零分$`)str = reg.ReplaceAllString(str, "整")reg, err = regexp.Compile(`零角`)str = reg.ReplaceAllString(str, "零")reg, err = regexp.Compile(`零分$`)str = reg.ReplaceAllString(str, "整")reg, err = regexp.Compile(`零[仟佰拾]`)str = reg.ReplaceAllString(str, "零")reg, err = regexp.Compile(`零{2,}`)str = reg.ReplaceAllString(str, "零")reg, err = regexp.Compile(`零億`)str = reg.ReplaceAllString(str, "億")reg, err = regexp.Compile(`零萬`)str = reg.ReplaceAllString(str, "萬")reg, err = regexp.Compile(`零*元`)str = reg.ReplaceAllString(str, "元")reg, err = regexp.Compile(`億零{0, 3}萬`)str = reg.ReplaceAllString(str, "^元")reg, err = regexp.Compile(`零元`)str = reg.ReplaceAllString(str, "零")if err != nil {log.Fatal(err)}return str}func main() {   fmt.Println("12345.78的大寫金額為：",ConvertNumToCny(12345.78))}

上面代碼執行結果如下（可以使用ConvertNumToCny函數輸入任何轉換金額作為參數）：

我們對於大金額的資料經常需要數位元而降低了我們讀取資料的效率，可以使用golang以萬為單位加入中文標識分割增加數字可讀性，代碼如下：

package mainimport ("strings""strconv""fmt")func ConvertNumToCap(num float64) string{    strnum := strconv.FormatFloat(num, 'f', 2, 64)    capitalSlice := []string{"萬","億","兆"}    index := 0    result := ""    sdivision := strings.Split(strnum,".")    sl := sdivision[0]    if len(sdivision)>1{        result="."+sdivision[1]    }    // slength := len(sl)    for len(sl)>4{        result = capitalSlice[index]+sl[len(sl)-4:] + result        index = index+1        sl = sl[0:len(sl)-4]    }    result = sl+result    result = strings.Replace(result,"萬0000","萬",-1)    result = strings.Replace(result,"億0000","億",-1)    result = strings.Replace(result,"兆0000","兆",-1)    result = strings.Replace(result,"億萬","億",-1)    result = strings.Replace(result,"兆億","兆",-1)    return result}func main() {   fmt.Println("123450000.78的金額轉換為：",ConvertNumToCap(123450000.78))}

上面代碼執行結果如下（可以使用ConvertNumToCap函數輸入任何轉換金額作為參數）：